This document discusses a project to create mobile apps to provide just-in-time support for trainee teachers in Wales. It describes creating English and Welsh language apps using the Xerte and App Studio platforms to give teachers access to the Welsh science curriculum and skills levels on their mobile devices. An evaluation found the initial app format needed adjusting. The apps will be made freely available to educators in Wales through the Hwb platform, and there is potential to create similar apps for other subjects and professions to support workplace learning.